Pulling device



May 7, 1963 A. MARQUARDT PULLING DEVICE 2 Sheets-Sheet 1 Filed Feb 6.1961 #rra/PME),

Ma'y 7, 1963 A. MARQUARDT PULLING DEVICE 2 Sheets-Sheet 2 Filed Feb. 6,1961 I mwa: A04/e4 I NV EN TOR. #mx/0,? MANI/1R07 United States Patent O3,088,513 PULLING DEVICE Arthur Marquardt, 23121 Liberty, St. ClairShores, Mich. Filed Feb. 6, 1961, Ser. No. 87,227 13 Claims. (Cl.153-32) This invention relates to a pulling device, and moreparticularly to a type of mechanism which may be used in a body bumpshop `for vehicles for the purpose of bending and pulling vehiclep-anels into proper shape.

Heretofore, particularly in the body repair business and in garages yforthe repair of vehicle bodies and parts, very often the vehicle .panelinvolved, such as a door, a quarter panel or deck is so collapsed as aresult of a collision as to render substantially diiiicult the matter ofgenerally reforming the part to its normal shape as a part of -a bumpingoperation, for illustration.

Various efforts have been made to provide devices which would accomplishthis, all, to the extent of applicants knowledge, have been completelyineffective for the desired purpose.

It is therefore the primary object of the present invention to provide anovel form of pulling device made of a limited number of parts which isstructurally effective for the intende-d purpose.

It is a further object of the present invention to provide a novelpulling device by which the same may be simply and easily and quicklyinterconnected with a portion of a vehicle panel to be pulled and whichis adapted for operation, using an impact power operated wrench or thelike, for activating the present pulling device.

Itis a further object of the present invention to provide a novel formof pulling device particularly adapted for bending of vehicle panelswhich is elfective Without adjustment for pulling in various directions.

These and other objects will be seen lfrom the following specication andclaims in conjunction with the appended drawings in which:

FIG. 1 is a side elevational View of the present pulling device.

FIG. 2 is a plan view thereof as a section taken on line 2-2 of FIG. 1.

FIG. 3 is a section taken on line 3-3 of FIG. 1, with portions thereofpartially broken away and additionally sectioned, for illustration.

FIG. 4 is `a lfragmentary section taken on line 4--4 of FIG. 3, but onan increased scale.

It will be understood that the above -drawings illustrate merely apreferred embodiment of the invention and that other embodiments arecontemplated within the scope of the claims hereinafter set'forth.

Referring to the drawings, the present pulling device includes arectangular base generally indicated at 11, including the pair of spacedside angle members 12 and the opposed pair of longitudinally spaced endangle members 13, all rigidly interconnected as by the welds 14.

Holddown plates 15 project outwardly from opposite ends from each ofthe'side angle members 12, being iixedly secured thereto Vfor example,as by the welds 16, bein-g apertured to receive the bolts `17 'anchoredWithin the floor 18 and projecting thereabove in cooperation withholddown nuts 19, FIG. l.

Mounted on the base y11 adjacent the opposite ends of the end angles 13are the upright plates 20, which are transversely apertured at theirupper ends respectively in order to receive the pins 21 which projectfrom opposite ends of the respective pair of parallel spacedhorizontally disposed guide tubes 22, which overlie the side anglemembers 12, forming a part of base 11, `and accordingly are rotatableabout their respective longitudinal axes.

In the preferred embodiment of the invention, and as 3,088,513 PatentedMay 7, 1963 lCC best illustrated in FIG. 3, the guide tubes 22 aresquare in cross section and have slidably positioned therein thereinforcing similarly yshaped tubes 23 which merely act Y as stitfenersfor the said tubes 22.

A holddown stirrup 24, which is generally arcuate at its upper endloosely overlies central portions of the respective tubes 22 and extendsdownwardly for cooperative engagement upon opposite sides of the angleplates 12 and respectively secured thereto by the transverse bolts 25and associated spacer block 25', FIG. 2. The main purpose of theholddown stirrups 24 is -merely to limit flexing movements of the guidetubes 22, which are only anchored to the base at their respectiveopposite ends as at the swivel points 21. Accordingly the stirrups 24serve as holddown members but do not interfere with a normal amount ofrotation of the tubes 22, about their respective longitudinal axes.

'Tubular support 26 of a shape corresponding to the guide tube 22 isslidably mounted thereover, each tubular support having secured theretoa pair of longitudinally Ispaced upwardly extending holder rods 27, thesecuring being preferably by welding, or the like, as at 28.

Each of the holder rods 27, intermediate their ends have a peripheralcollar 29 of increased dimension and terminate in the upwardly extendingpointed end portions 30 forming an integral part thereof, but of adimension less than the dimension of the holder rods 27.

The extensions 30 of the said holder rods 27 are preferably square incross section as shown in FIG. 2 and are accordingly adapted tocooperatively receive respectively the lower ends of the parallel spacedupwardly extending bracing tubes 31. These tubes are telescopicallymounted over the ends 30 of the holder rods 27 and normally bear againstthe collars 29, as shown in FIG. 1. The cross -bar 32, xedlyinterconnects the upper ends of the bracing tubes 31, as by the welds33.

As shown in FIG. l, removable extensions 31 are provided for each of thebracing tubes 31, which extensions 31' at their lower ends havedownwardly depending pointed end portions 32', preferably square incross section adapted for cooperative telescoping registry with theupper open ends of the bracing tubes 31. The extensions 31 may beomitted, as desired.

The above described bracing tubes 31 are in a substantially uprightposition, as best illustrated in FIG. 3. The above described bracingtubes 31 may thus be referred to as a first pair of bracing tubes whichare telescopically mounted upon the corresponding holder rods 27-30 uponthe tubular support 26, shown in FIG. l.

-There is an additional pair of upwardly extending, but normallyinclined bracing tubes 35 which Ihave a mounting at their lower endssimilar to the mounting above described with respect to bracing tubes31. For example, there is an additional tubular support 26 mounted uponthe second guide tube 22, and slidably adjustable thereover, whichsupport 26 also =has a pair of upwardly extending holder rods 27terminating in the reduced ends 30 `of square cross section, as bestillustrated in FIG. 3, which rods also have intermediate their ends theperipheral collars 29 to cooperatively engage the lower ends of thesecond pair of bracing tubes 35, telescopically mounted thereover.

The second pair of bracing tubes 35 are inclined towards thesubstantially upright pair of bracing tubes 31 and are connected theretoby the bolt and nut 37 which engages the rearwardly extending plates 34,suitably anchored to outerside portions of the respective bracing tubes31 at their upper ends, as best shown in FIGS. l and 3.

A tubular cross head is slidably and adjustably mounted over one of thesaid pairs of bracing tubes as for example the tubes 31 and may besecured in adjusted position with respect thereto by the fasteners 44.The said cross head includes a pair of substantially upright tubes 38also of square cross section, which are slidably mounted upon therespective bracing tubes 31.

Tubular bosses 39 project inwardly from the lower ends of the respectivemembers 38 and are xedly secured thereto at 40 and are connected by acylindrical stud 41 which projects into and between the respectivebosses 39, providing a means for loosely connecting the cross headassembly together at its lower end.

Each of the cross head defining tubes 38 on their respective outer sidesare slit downwardly as at 42, and transversely at 42 and there projectsfrom the opposite sides of the said tubes 38 at their upper ends a pairof securing ears 43 with a fastening bolt 44 and corresponding nutinterposed therebetween to thus apply upon tightening frictionalengagement of the said tubes 38 with the respective supporting orbracing tubes 31, to effectively secure the cross head assembly in thedesired position of adjustment with respect to the said tubes 31.

The cross head also includes as a part thereof, the rearwardly extendingplates 45 which are secured to respectively the upper end inner portionsof the tubes 38, as by welding or the like and are transverselyapertured to receive the outwardly extending pins 47 on the bearingblock 46, which is swivelly mounted between the said plates 45, as shownin fF-IG. 4.

An elongated power rotatable screw 48, headed at its outer end as atr53, is loosely journaled through the bearing block 46 and carriesadjacent its headed end a washer 49 secured immovably to the said screwby a pin 50, which washer operatively engages one side of the bearingblock 46. A secondary retainer plate 51 is mounted upon the said bearingblock 46 and bearing against the outer surface of the washer 49, thesaid plate 51 being secured to the bearing block by the fasteners 52 tothus immovably anchor the screw 48 against longitudinal movementrelative to the bearing block but at the same time permitting freerotation of the said screw 48, as desired.

The pulling mechanism, which forms a further part of the cross headassembly, also includes the nut 54, which is threaded over the end ofthe screw 48, which said nut is secured Within one end of a tube 55 ofsquare cross section. An eye 56 projects from its other end, with a hook57 loosely secured to the chain. Guide tube 58 of square cross sectionis xedly secured at one end to bearing block 46 and guidably receivesnut mounting tube 55. Hook 57 is connected to chain 60.

Tubes 55 and 58, and screw 48, as shown in FIGS. 3 and 4 extend from thecross head tubes 38 in a substantially horizontal direction and betweenthe pair of bracing tubes 35.

As shown in FIG. 3, a preferably U-shaped stirrup 62 is provided whichreceives and has loosely connected thereto the free end of chain 60, asby the transverse pin 61. A suitable swivel 63 is mounted upon theforward portion of stirrup 62 and is connected to the upright pressureplate 64, which has a pair of transverse apertures adjacent its oppositeends.

The L-shaped threaded rods 65 project through plate 64 and are xedly yetadjustably secured thereto by the respective bolts 67, which threadedlyengage over corresponding portions of L-shaped rods 65.

In normal operation, should it be desired to elect a pulling action uponsome portion of a vehicle body, such as the vehicle panel indicated indotted lines in FIG. 3, all that is necessary is to make a pair of smallapertures 68 through the said vehicle panel, after which the L-shapedhooks or rods, 65 are projected therethrough and assembled in the mannershown in FIG. 3. Once this has been done, an impact wrench of aconventional design, being a power-operated type of wrench, is projectedover the head 53 of the screw 4 8 and power applied with the result thatthe screw 48 is rotated at high speed and the nut 54 and connected tube55 are longitudinally adjustable thereon for effecting a pulling actionthrough the hook 57, chain 60, stirrup 62 and pressure plate 64 to thevehicle panel element.

In FIG. 3, the screw 48, and the associated tubes 55-58, are shown in apair of angular dotted line positions to illustrate that with thepresent construction, the pulling force may be at any desired angle withrespect to the upright supports 31, or bracing tubes. Thus a pullingforce may be applied in any desired direction, and at any desired heightby vertical adjustments of the cross head assembly upon the bracingtubes 31, in the manner above described, or upon the extensions 31.

Support tubes 26 are slidably adjustable upon guide tubes 22, and may bepositioned upon either side of the holddown stirrups 24.

While the lower ends of the respective bracing tubes are telescopicallyadjustable upon the holder rod extensions 30, in use they are iixedlysecured thereto by the transverse headed pins 59 which extend throughthe rcspective pairs of bracing tubes 33 and 35 and throughcorresponding apertures in the holder rod extensions 30. A series oflongitudinally spaced apertures may be formed through extensions 30.

In the described illustrative embodiment of the invention, guide tubes22, support tubes 26, holder rods Z7, extensions 30, bracing tubes 31,35, extensions 31' and their end portions 32 are all of square crosssection.

Having described my invention, reference should now be had to thefollowing claims.

I claim:

1. A pulling device comprising a rectangular base securable to a floorsurface, a pair of parallel spaced, horizontally disposed guide tubesoverlying the sides of the base and at their ends axially mounted andjournaled thereon, a tubular support slidably mounted on each guidetube, a pair of longitudinally spaced holder rods secured to eachsupport and extending upwardly thereof, a pair of elongated parallelspaced upwardly extending bracing tubes telescopically mounted at theirlower ends upon the corresponding holder rods of each of said supports,one of said pairs of bracing tubes being inclined towards the other pairof bracing tubes, means adjacent their upper ends for releasablysecuring said bracing tubes together, a tubular cross head slidably andadjustably mounted over one of said pairs of bracing tubes, meansfixedly securing said cross head in adjusted position, and a poweroperated pulling means swivelly mounted through said cross head andextending through the other pair of said bracing tubes.

2. In the pulling device of claim l, said guide tubes and tubularsupports being square in cross section.

3. In the pulling device of claim 1, a peripheral collar on c ach ofsaid holder rods intermediate their ends, and serving as stops for thelower ends of said bracing tubes.

4. In the pulling device of claim l, one of said pairs of' said bracingtubes being substantially upright, the said means releasably connectingsaid pairs of bracing tubes together, including horizontal arms securedat their one ends to said substantially upright bracing tubes, the upperend of said other pair of bracing tubes being pivotally connected tosaid arms.

5. In the pulling device of claim 1, said cross head including a pair ofupright tube elements movably mounted respectively on one of said pairsof bracing tubes, means loosely interconnecting the one ends of saidtube elements, and swivel mounting means between the other ends of saidtube elements supporting said pulling means.

6. In the pulling device of claim l, said cross head including a pair ofinterconnected upright tube elements mounted respectively on one of saidpairs of bracing tubes, the means ixedly securing said cross head inadjusted position, including longitudinal and transverse slits at theone ends of said tube elements, spaced ears projecting from the ends ofsaid tubes, and adjustable fasteners between and interconnecting saidears.

7. In the pulling device of claim 1, said pulling means including abearing block swivelled upon said cross head, an elongated headed screwjournaled through said bearing block, and retained against longitudinalmovement, a nut threaded over said screw, a pulling hook swivellyconnected to said nut, the head of said screw adapted to be engaged by apower-operated impact wrench.

8. In the pulling device of claim l, said pulling means including aplate, 4a pair of spaced hooks adjustably secured to said plate andadapted to operatively engage a panel of a vehicle to be pulled to adiierent shape, a chain at one end secured to said plate, a nut iiexiblyconnected to the other end of said chain, a headed screw threadedthrough Said nut and swivelly mounted and journaled upon said crosshead, the head of said screw adapted to receive a power operated impactwrench.

9. A pulling device comprising a rectangular base securable to a floorsurface, a pair of supports pivotally mounted upon opposite sides ofsaid base, a pair of 1ongitudinally spaced holder rods secured to eachsupport and extending upwardly thereof, a pair of elongated parallelspaced upwardly extending bracing tubes telescopically mounted at theirlower ends upon the corresponding holder rods of each of said supports,said pairs of bracing tubes being inclined towards each other, meansadjacent their upper ends releasably securing said bracing tubestogether, a tubular cross head slidably and adjustably mounted over oneof said pairs of ybracing tubes, means tixedly securing said cross headin adjusted position, and a power operated pulling means swivellymounted through said cross head and extending through the other pair ofsaid bracing tubes.

l0. In the pulling device of claim 1, a peripheral collar on each ofsaid holder rods intermediate their ends, and serving as stops for thelower ends of said bracing tubes, and a pin extending transverselythrough each pair of bracing tubes and corresponding holder rods,securing the same respectively against relative longitudinal adjustment.

l1. In the pulling device of claim 1, a peripheral collar on each ofsaid holder rods intermediate their ends, and serving as stops for thelower ends of said bracing tubes, said holder rods outwardly of saidcollars including extensions of a reduced dimension, cooperativelyreceiving said bracing tubes, said extensions and latter tubes being ofsquare cross section.

12,. In the pulling device of claim 1, said pulling means including abearing block swivelled upon said cross head, an elongated headed screwjournaled through said bearing block, and retained against longitudinalmovement, a nut threaded over said screw, a first tube of square crosssection having axially secured therein at one end the said nut, a guidetube of square cross section axially secured at one end to said bearingblock and guidably and telescopically receiving said rst tube, a hookswivelly connected to the other end of said first tube, and flexiblemeans connected to said hook adapted for pulling engagement with a partof a vehicle body.

13. In the pulling device of claim l, said pulling means including aplate, a pair of spaced hooks adjustably secured to said plate andadapted to operatively engage a panel of a Vehicle to be pulled to adifferent shape, a chain at one .end secured to said plate, a irst tubeof square cross section at one end iiexibly secured to the other end ofsaid chain, a nut secured within the other end of said tube, a bearingblock swivelly mounted on said cross head, a headed screw journaledthrough said block, retained against relative longitudinal movement andthreaded into said nut and a guide tube axially secured to said lbearingblock telescopically and guidably receiving said first tube.

References Cited in the tile of this patent UNITED STATES PATENTS2,140,686 Bennett Dec. ,20, 1938 2,334,080 Freeman Nov. 9, 19432,799,920 Hansen July 23, 1957

1. A PULLING DEVICE COMPRISING A RECTANGULAR BASE SECURABLE TO A FLOORSURFACE, A PAIR OF PARALLEL SPACED, HORIZONTALLY DISPOSED GUIDE TUBESOVERLYING THE SIDES OF THE BASE AND AT THEIR ENDS AXIALLY MOUNTED ANDJOURNALED THEREON, A TUBULAR SUPPORT SLIDABLY MOUNTED ON EACH GUIDETUBE, A PAIR OF LONGITUDINALLY SPACED HOLDER RODS SECURED TO EACHSUPPORT AND EXTENDING UPWARDLY THEREOF, A PAIR OF ELONGATED PARALLELSPACED UPWARDLY EXTENDING BRACING TUBES TELESCOPICALLY MOUNTED AT THEIRLOWER ENDS UPON THE CORRESPONDING HOLDER RODS OF EACH OF SAID SUPPORTS,ONE OF SAID PAIRS OF BRACING TUBES BEING INCLINED TOWARDS THE OTHER PAIROF BRACING TUBES, MEANS ADJACENT THEIR UPPER ENDS FOR RELEASABLYSECURING SAID BRACING TUBES TOGETHER, A TUBULAR CROSS HEAD SLIDABLY ANDADJUSTABLY MOUNTED OVER ONE OF SAID PAIRS OF BRACING TUBES, MEANSFIXEDLY SECURING SAID CROSS HEAD IN ADJUSTED POSITION, AND A POWEROPERATED PULLING MEANS SWIVELLY MOUNTED THROUGH SAID CROSS HEADEXTENDING THROUGH THE OTHER PAIR OF SAID BRACING TUBES.